Swap Magic Data files

I am having an ongoing issue with the user car over braking going into every slow corner and getting overtaken by the A1 cars. This issue is blatant in the Detroit track. Couple friends on here tweaked the Detroit track and helped (much obliged) but it still has the issue. Funny thing is that it is not an issue at all at the Phoenix track or the orig Monte Carlo track. Is there a way to somehow do a swap of some file to replace the user braking performance data from one track to another? Long time user but no expert in software, understand.

Thanks sincerely,
Austin F1